Abstract: A picture producing apparatus forms a picture comprising a plurality of picture elements with different light-reflecting properties providing different optical reflection densities using a plurality of dot forming units to provide dots of recording materials of different concentrations. The optical reflection density range of an entire original picture to be reproduced is determined and selecting circuitry responsive to that determination selects at least one of the dot forming units to form picture elements reproducing the original picture. The dot forming units vary the areas of the picture elements formed by the dots so as to represent in the reproduced picture the optical reflection density range of the original.

Abstract: An ink jet recording apparatus with improved operational performance and compactness has a mounting section for a recording paper cassette, a mounting section for an ink cartridge, and an accommodating section for a printed recording paper each have an opening at the same side of the apparatus. Preferably, an operation section for use in operating the apparatus and a display section for displaying the operation state of the apparatus are also disposed at the above same side.

Abstract: Liquid jet recording apparatus, in particular, for use in ink-jet recording apparatus. The liquid jet recording apparatus comprises recording liquid storing chambers of large and small capacities. Upon pressurizing, the liquid is supplied from the chamber of large capacity to that of small capacity and discharged from a point of a jet head.

Abstract: An image forming method comprises the steps of providing pattern elementary marks which provide an image pattern, controlling the size of the pattern elementary marks, and forming the pattern elementary marks substantially at equal intervals. The controlling step is such that use is made preferentially of the pattern elementary marks in an area wherein the variation in density gradient level relative to the variation in size of the pattern elementary marks is great. An apparatus for carrying out such method is provided.

Abstract: A method of mounting parts to both sides of a main body characterized by moving a carriage at a predetermined speed along a specified path of transport with the main body placed on the carriage; moving a pair of movable tables in synchronism with the carriage in the same direction as the movement thereof, the movable tables being disposed at opposite sides of the transport path and each carrying at least one robot and an assembling device; causing the movable tables to support the main body during the synchronized movement; setting a part held by the robot in a specified position on the main body; attaching the part to the main body by the assembling device; and thereafter delivering the main body from the movable tables onto the carriage. Since the carriage is moved during the assembly of parts, this method assures the assembly line of a high-speed operation.

Abstract: An ink jet recording apparatus comprises: at least one ink jet head to emit a recording ink; main and sub ink tanks to store the ink which should be supplied to the head; a negative pressure generating device to generate a negative pressure to supply the ink from the sub ink tank into the head under the suction action; a pressure sensor, provided in the ink passage, for detecting whether the recording ink substantially remains or not in the sub ink tank when the negative pressure generating device operates. In response to a pressure variation in the ink passage, the pressure sensor determines that no ink substantially remains in the sub ink tank when the pressure in the ink passage is higher than a preset value, thereby generating a detection signal to supplement a new ink into the tank to a control circuit.

Abstract: A recorder comprises first drive means for feeding a record paper to a stand-by position, second drive means for feeding the record paper from the stand-by position to a record position, and transport means for retracting a retainer which retains the record paper at the record position, during the operation of the first drive means and returning the retainer to the record position in response to the feed of the record paper during the operation of the second drive means.

Abstract: Method and apparatus for forming a pattern in which an array duty factor of elementary pattern marks which are elements for forming a picture is no less than 0.5.

Abstract: There is provided a liquid jet recording apparatus using recording liquids having viscosities depending upon an ambient temperature. This apparatus comprises: at least one liquid droplet jet head for emitting at least one recording liquid droplet each time the head is driven; drive means for repeatedly driving this head; and control means for controlling the frequency of the repetitive driving of the head by the driving means in accordance with the ambient temperature.

Abstract: A camera having a data inserting device and an electric motor drive device is arranged to insert data onto each film frame, but to permit insertion of data only onto a first frame of film when a camera release button is depressed to produce a continuous photographic operation at high speed.

Abstract: An electric motor drive device for a camera has at least two sets of gear trains of different gear ratios for transmitting the driving force of a motor to the winding mechanism of a camera and a change-over mechanism for automatically selecting the most suitable gear train out of these gear trains depending on the condition of batteries attached to the electric motor drive device, so that the driving force of the motor can be transmitted to the winding mechanism through the gear train most suited to the condition of the motor.

Abstract: The present invention relates to an interval timer device for a camera, particularly an interval timer for producing a release signal for operating the shutter release operation of a camera at a certain predetermined frequency and a charge signal for performing the charge operation of the flash device a certain predetermined time before the release signal is produced. In the case of this kind of the interval timer device, because the flash device has been charged a certain predetermined time before the release signal is produced, the flash time can be emitted without fail at the time of photographing. However, because the above device is charged independently of the object brightness, even in case the object brightness is so high that the flash photography is not necessary, unnecessary power is often consumed. In accordance with the present invention, the interval timer device produces the above charge signal only in case of a low object brightness, so as to eliminate the above shortcomings.

Abstract: An auxiliary power source device to be connected in series to the power source of the motor driven device built in the camera or attachable on the camera so as to increase the winding speed of the camera, so designed that the auxiliary power source device is provided with the load current detecting means in such a manner that the current delivered from the auxiliary power source device to the camera reaches a certain determined value the output voltage of the auxiliary power source device is lowered by means of the output of the load current detecting means.

Abstract: A motor drive apparatus constructed to be not only attachable to cameras having mechanical coupling parts of two different types which are ordinarily not interchangeable. A change-over switch inserted in the mode signal transmission line of the motor drive apparatus closes when the apparatus is attached to a camera of the former type and opens when it is attached to a camera of the latter type.

Abstract: An automatic winding device for a camera adapted to be operatively mounted on a camera body to perform film winding action includes a main body part adapted to be connected with the camera body and a grip part including a release button operably connected with the main body part and mounted to be movable relative thereto to a plurality of desired positions.